Sixty subjects diagnosed of Nephritic syndrome (NS) and 60 apparently healthy aged matched individuals were recruited as control for this project work. Written concent was obtained from the participants and ethical clearance was obtained from Ladoke Akintola University Teaching Hospital Osogbo. The parameters estimated were whole blood viscosity (WBV), Plasma Viscosity (PV), White blood cell count (WBC), Platelets count (PLT), Packed cell volume (PCV), and Fibrinogen concentration (FIBC). Statistically significant increased results were observed in WBV, PV, FIBC (p<0.05), while the results of PCV and PLT were significantly reduced compared with the control. Male subjects parameters were compared with the male control, statistically significant results were observed in PV, FIBC and PCV (P<0.05). In the female subjects when their parameters were compared with female controls, WBV, PV, FIBC, and PCV were statistically significant (p<0.05). The Pearson correlation showed positive linear correlation between WBV and PV (p<0.05), WBV and PCV (p<0.01), WBC and PLT (p<0.05). Conclusion: The haemorheological parameters in Nephrotic syndrome patients were altered and these might lead to thrombotic episode as a result of Hyperviscosity of blood and also cardiovascular episode due to overwork of the heart.